Outer rotor direct current brushless motor used for automobile tail gas treatment system

Abstract

The invention discloses an outer rotor direct current brushless motor used for an automobile tail gas treatment system and relates to an outer rotor motor. An existing general direct current brushless motor comprises two parts, namely a motor and a controller, the structural integration level is low, the two parts are independent and separated, the installation efficiency is lower, system malfunction can be easily caused by leads due to lead connection between two parts, the structural volume is large, and the system structure part cost is high. The technical scheme is characterized in that the motor also comprises a bracket and a control circuit plate provided with the controller, the bracket is provided with two bearing chambers, bearings are embedded into the bearing chambers of the bracket; a stator is fixed to the control circuit plate to form a stator module, the control circuit plate is fixed to the bracket through a connecting piece, the rotating shaft of the outer rotor penetrates through the stator, and the control circuit plate is matched with the bearings inside the bracket. By integrating the motor with the controller, the volume of the motor is greatly reduced, the cost of the structure part is lowered, the structure is simplified, assembly is convenient, and the motor has reliable performance.

Description

technical field [0001] The invention relates to an outer rotor motor. Background technique [0002] The existing general DC brushless motor is composed of two parts, the motor and the controller, the structure integration degree is low, and the two parts are independent. The connection between the two can be realized by the controller to control the motor. From the perspective of structural form, there are mainly the following defects: [0003] 1. The two parts should be installed separately, and two installations are required, and the installation efficiency is relatively low. [0004] 2. If there is a lead wire connection between the two parts, it is easy to cause system failure caused by the lead wire. [0005] 3. The structure volume is relatively large, and the cost of system structural parts is high. Contents of the invention [0006] The technical problem to be solved and the technical task proposed by the present invention are to perfect and improve the existin...

AI Technical Summary

Problems solved by technology

[0003] 1. The two parts need to be installed separately, two installations are required, and the installation efficiency is relatively low

[0004] 2. There is a lead wire connection between the two parts, which is easy to cause system failure caused by the lead wire

[0005] 3. The structure volume is relatively large, and the cost of system structural parts is high

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